Abstract

A new species of Primulina, P. yangshuoensis Y.G. Wei & Fang Wen (Gesneriaceae) from NE Guangxi, China, is described and illustrated in this report. This new species is similar to P. villosissima (W.T. Wang) Mich. Möller & A. Weber and P. fangii (W.T. Wang) Mich. Möller & A. Weber,, and is easily distinguished from other species in Primulina by its morphology of leaves and flowers. P. yangshuoensis has more leaves (12-14) with long petioles (2-5 cm long), smaller carnosulus or carnosus leaf blades (3.5-6.5 × 2-4.5 cm), broadly ovate-round, subround or round in shape, broadly cuneate or sub-rotund base and densely papillose-hispid hairs on both surfaces, and it possesses more cymes (8-10), fewer flowers (1-4 per cyme), lanceolate bracts, glabrous anthers, and two staminodes per flower. It flowers from second half of October to November.

中文摘要

本文報導了中國廣西苦苣苔科（Gesneriaceae）一個新種 – 陽朔報春苣苔（Primulina yangshuoensis Fang Wen & Y.G. Wei）。該種近緣於長毛報春苣苔（P. villosissima (W.T. Wang) Mich. Möller & A. Weber）與方氏報春苣苔（P. fangii (W.T. Wang) Mich. Möller & A. Weber），且易於與報春苣苔屬內其他種區分。陽朔報春苣苔具多數葉（12-14枚）；葉片小型（3.5-6.5 × 2-4.5 cm），具長葉柄（2-5 cm），闊倒卵狀圓形、近圓形或圓形，且肉質化，葉兩面均具乳頭狀凸起基部的硬毛；它有較多的花序（8-10）；每一花序上具較少的花（1-4）；苞片披針形；花藥無毛；退化雄蕊2枚；其花期於10月後半期到11月。

Keyword: Gesneriaceae, Guangxi, new species, Primulina yangshuoensis.